Free introductory physics homework help step by step from qualified mentors. Algebra and calculus based general physics homework. High school and undergraduate level.
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How Does Polarization Support the Wave Theory of Light?
- salsabel
- · Replies 3 ·
Acceleration when velocity is a function of distance
- Fyei
- · Replies 7 ·
Speed at which a car on a banked curve will slide.
- SheldonG
- · Replies 2 ·
Conservation of momentum + elastic collision
- Return
- · Replies 2 ·
Setting the Quiescent Point in an NPN Circuit
- sanado
- · Replies 1 ·
Gravitational force and oscillation question
- Natbird
- · Replies 4 ·
Photo voltaic cell Vs. solar heating panel
- oprfot
- · Replies 2 ·
How Do You Find a Specific Horizontal Distance in a Projectile Problem?
- Jason03
- · Replies 1 ·
What is the Pressure and Resultant Force at the Bottom of the Tub?
- Newton86
- · Replies 8 ·
Calculating Specific Charge (q/m) for a Charged Particle in a Magnetic Field
- Britney2
- · Replies 1 ·
Are My Test Review Answers Correct?
- iirevolverii
- · Replies 5 ·
Are the action and reaction forces equal in a tennis ball-racquet collision?
- vysis
- · Replies 8 ·
Torque and Forces of grindstone
- NinjaIQ
- · Replies 1 ·
Solar Cell calculating the power output
- hickyai5
- · Replies 2 ·
Roller Coaster Dynamics: Forces at the Top and Bottom of the Track
- Jason03
- · Replies 4 ·
How to find the size of the electric potential difference between two points?
- pebbles
- · Replies 1 ·
Velocity differential equations
- prezmoneymike
- · Replies 17 ·
Simple Harmonic Motion, Finding Time
- Ithryndil
- · Replies 4 ·
Graphing expressions without given values?
- Seraph404
- · Replies 9 ·
Aquarium Pressure Problem Solution Explanation
- bcjochim07
- · Replies 7 ·
Finding intensity and sound level from amplitude alone
- tokuroka
- · Replies 2 ·
Two converging lenses 40cm and 30cm apart with 15cm and 10cm focal lengths
- checkmarks
- · Replies 1 ·
Energy directly proportional to frequency
- daNAV1GATOR
- · Replies 3 ·
Light (frequency, wavelength etc.)
- tim_3491
- · Replies 1 ·
How to find the number of excess electrons?
- pebbles
- · Replies 5 ·
Solving Simple Harmonic Motion Problems
- Sheneron
- · Replies 3 ·
Calculating Gas Pressure in a Nebula with 100 Atoms/cm^3 and 7500 K Temperature
- bcjochim07
- · Replies 3 ·
Photon Scattering: Find Wavelength of Incident Photon
- Fizzicist
- · Replies 5 ·
Determine pendulum's maximum angular displacement
- Sheneron
- · Replies 2 ·
Impulse from a bouncing ball dropped from 1.25 m
- chocolatelover
- · Replies 2 ·
Finding the launch angle to hit a target 54.08m away
- inflames829
- · Replies 6 ·
Why does this work? (X and Y independent)
- platina
- · Replies 7 ·
Adding three sinusoidal waves with a 120° phase difference
- c-murda
- · Replies 21 ·
How Do You Calculate the Period of an Electromagnetic Wave?
- sonrie
- · Replies 1 ·
Induced Current circuit problem
- Gear300
- · Replies 10 ·
Modeling Time to Reach Specific Pressure in Adiabatic Tire Inflation
- tashkent
- · Replies 5 ·
Gravitational Potential Energy and Work Relationships
- dsf1224
- · Replies 1 ·
Displacement of String Waves at Point of Cross
- aliciagu
- · Replies 3 ·
Planet is 2.00 a.u. when closest to sun. eccentricty is .500. find period
- c-murda
- · Replies 2 ·
Calculate Velocity to Reach Target: Sx=15000m, Sy=400m
- confusednic
- · Replies 4 ·
Calculating Magnetic Field Between Parallel Wires
- viperassasin
- · Replies 3 ·
Distance between two charges where field strength = 0
- TFM
- · Replies 9 ·
Elastic collision in a pendulum
- Jenez
- · Replies 1 ·
How much additional ethanol can be stored in a cooled steel tank?
- TFM
- · Replies 9 ·
Finding cylinder mass from energy conservation with unknown radius
- Lma12684
- · Replies 6 ·
Rocket Fuel Consumption: Calculation of 80kN Takeoff Rate
- icymage
- · Replies 4 ·
Thermodynamics - cyclic pressure/volume process
- TheStebes
- · Replies 2 ·
Sound intensity as a function of distance from source
- glasshut137
- · Replies 4 ·
Hyperbolic dynamics for linear maps with mixed eigenvalues
- standardflop
- · Replies 1 ·
Convex mirror: finding object height and distance when image is 12cm tall 30cm away
- myoplex11
- · Replies 5 ·
Helium balloon in water and air
- greset
- · Replies 1 ·
Rotational Dynamics of a meter stick
- Lma12684
- · Replies 11 ·
Train accelerating, coasting, then braking to rest
- 9giddjl
- · Replies 9 ·
Finding focal length by forming image on screen with a mirror
- ~christina~
- · Replies 2 ·
How can I accurately calculate distance using sound and various variables?
- L1988
- · Replies 2 ·
Conceptual Question on Elementary Thermodynamics
- Ricky2357
- · Replies 3 ·
Force induced on a point charge by two conducting planes
- Strawberry
- · Replies 6 ·
Solving Nature of Atoms Homework: Part (a) ionization energy Z=2
- arod2812
- · Replies 1 ·
Torque from air resistance on two rotating falling balls
- mathildej
- · Replies 1 ·
What are the units of solid angle in metric and imperial systems?
- manjuvenamma
- · Replies 3 ·
How does the electric field affect the motion of particles?
- ~christina~
- · Replies 7 ·
QuestionExploring the Hubble Constant: Calculating Distance and Limitations
- _Mayday_
- · Replies 2 ·
How Does Wave Speed Affect Pulse Travel Time and String Tension?
- azila
- · Replies 5 ·
Solving Mechanical Waves: Determining Wavelength and Wavespeed
- ku1005
- · Replies 3 ·
What is the Length of the Pendulum?
- BoostAdiction
- · Replies 6 ·
Calculate the magnitude of particle acceleration
- inflames829
- · Replies 3 ·
Finding the hypotenuse in statics string tension problems
- Mo
- · Replies 8 ·
Does EM wave amplitude change crossing media boundaries?
- BrooklynBees
- · Replies 1 ·
How Does an Elevator Affect Apparent Weight?
- inflames829
- · Replies 20 ·
What Phase Difference Causes Maximum SHM Separation Equal to Amplitude?
- manjuvenamma
- · Replies 5 ·
How Does Doppler Shift Explain the Beats Heard from a Moving Car?
- zylaxice
- · Replies 3 ·
What is the frequency of a gamma particle with an energy of 4.5 MeV?
- WPCareyDevil
- · Replies 4 ·
What is the Torque on a Shoulder Joint Holding a Vacuum Cleaner at an Angle?
- sruthis
- · Replies 6 ·
Maximum force on femur bone before fracture and shortening
- blueantihero
- · Replies 6 ·
Find distance using speed of sound
- L1988
- · Replies 12 ·
Latent heat, steam and ice question
- TheStebes
- · Replies 9 ·
Beer Bubble Rises: Find Volume Ratio - 65 characters
- colton4286
- · Replies 1 ·
Destructive Interference with a Pebble
- luvinlife
- · Replies 2 ·
Prob. 51 Physics: Moment of Inertia for 10 kg Rolling Cylinder
- salehajaweid
- · Replies 4 ·
How Does Bernoulli's Equation Determine the Discharge Rate from a Tank?
- horsegirl09
- · Replies 1 ·
Finding screw forces from 3D torques in static equilibrium
- shawn87411
- · Replies 7 ·
Torque required to rotate a disk through 12 revolutions in 6 seconds
- bigbuck
- · Replies 4 ·
What Color Would the Sun Appear If the Earth's Atmosphere Scattered Green Light?
- jcdenton89
- · Replies 2 ·
Fluid Mechanics of swimming polar bear
- altamont
- · Replies 1 ·
Calculating Oxygen Volume in Hospital Tanks Using Ideal Gas Law
- colton4286
- · Replies 1 ·
Why is angular momentum conserved when radius changes?
- kyin01
- · Replies 1 ·
Point source illuminance, mirror height, and concave mirror magnification
- Andy111
- · Replies 3 ·
Work, Elastic and Kinetic Energy
- KMjuniormint5
- · Replies 9 ·
Capacitor and voltage source in one?
- ~christina~
- · Replies 9 ·
Force Y at 45° for body on point of slipping down incline
- DigitalSpark
- · Replies 9 ·
Can electromagnetic energy block oxygen passage?
- energyq
- · Replies 6 ·
What Velocity Cancels Electrostatic Repulsion Between Electrons?
- Dropout
- · Replies 3 ·
Linear and anular momentum of a hydrogen electron
- baseballer10p
- · Replies 1 ·
Circuits with parallel resistors
- chiurox
- · Replies 3 ·
How Do You Calculate the Kinetic Energy of a Spinning Bicycle Wheel?
- bigbuck
- · Replies 2 ·
Kinetic theory of gasses Integration problem
- brett812718
- · Replies 9 ·
Ball released from underwater depth that shoots 1m above surface
- BoostAdiction
- · Replies 9 ·
What Factors Influence the Equilibrium Temperature of an Object?
- heroine007
- · Replies 1 ·
Free Body Diagram of a Fish Swimming
- paulsep
- · Replies 2 ·